(Recommended) Creating an SFS Turbo Subdirectory Using a Dynamic PV

Prerequisites

• You have created a cluster and installed the CCE Container Storage (Everest) add-on of v2.3.23 or later in the cluster.
• To create a cluster using commands, ensure kubectl is used. For details, see Connecting to a Cluster Using kubectl.
• You have created an available SFS Turbo file system, and the SFS Turbo file system and the cluster are in the same VPC.

Dynamically Creating an SFS Turbo Subdirectory on the Console

1. Log in to the CCE console and click the cluster name to access the cluster console.
2. Choose Storage in the navigation pane. In the right pane, click the PVCs tab. Click Create PVC in the upper right corner. In the dialog box displayed, configure PVC parameters.

   Parameter	Description
   PVC Type	In this example, select SFS Turbo.
   PVC Name	Enter the PVC name, which must be unique in a namespace.
   Creation Method	Select New subdirectory.
   Storage Classes	Choose csi-sfsturbo.
   Access Mode	SFS Turbo volumes support only ReadWriteMany, indicating that a storage volume can be mounted to multiple nodes in read/write mode. For details, see Volume Access Modes.
   SFS Turbo	Click Select SFS Turbo. On the displayed page, select the SFS Turbo file system that meets your requirements and click OK.
   Subdirectory	Enter the absolute path of a subdirectory, for example, /a/b.
   Subdirectory Reclaim Policy	Whether to retain subdirectories when a PVC is deleted. Retain: If a PVC is deleted, the PV will be deleted, but the subdirectories associated with the PV will be retained. Delete: After a PVC is deleted, the PV and its associated subdirectories will also be deleted. NOTE: When a subdirectory is deleted, only the absolute path of the subdirectory configured in the PVC will be deleted. The upper-layer directory will not be deleted.

3. Click Create to create a PVC and a PV.

   You can choose Storage in the navigation pane and view the created PVC and PV on the PVCs and PVs tab pages, respectively.

Dynamically Creating an SFS Turbo Subdirectory Using kubectl

1. Use kubectl to access the cluster.
2. Create the pvc-sfsturbo-subpath.yaml file.

   apiVersion: v1
   kind: PersistentVolumeClaim
   metadata:
     name: pvc-sfsturbo-subpath    # PVC name
     namespace: default
     annotations:
       everest.io/volume-as: absolute-path                # An SFS Turbo subdirectory is used.
       everest.io/sfsturbo-share-id: <sfsturbo_id>        # SFS Turbo ID
       everest.io/path: /a                                # Subdirectory that is automatically created, which must be an absolute path
       everest.io/reclaim-policy: retain-volume-only      # When a PVC is deleted, the PV will be deleted, but the subdirectories associated with the PV will be retained.
   spec:
     accessModes:
       - ReadWriteMany      # ReadWriteMany must be selected for SFS Turbo.
     resources:
       requests:
         storage: 10Gi      # This parameter is only used for verification for the PVCs of the SFS Turbo subdirectory type. The value cannot be empty or 0.
     storageClassName: csi-sfsturbo     # Storage class name of the SFS Turbo file system

   Table 1 Key parameters

   Parameter	Mandatory	Description
   everest.io/volume-as	No	The value is fixed at absolute-path, indicating that a dynamically created SFS Turbo subdirectory is used.
   everest.io/sfsturbo-share-id	No	SFS Turbo ID How to obtain: Log in to the CCE console, choose Service List > Storage > Scalable File Service, and select SFS Turbo. In the list, click the name of the target SFS Turbo file system. On the details page, copy the content following ID.
   everest.io/path	No	Subdirectory that is automatically created, which must be an absolute path.
   everest.io/reclaim-policy	No	Whether to retain subdirectories when deleting a PVC. This parameter must be used with PV Reclaim Policy. This parameter is available only when the PV reclaim policy is Delete. Options: retain-volume-only: If a PVC is deleted, the PV will be deleted, but the subdirectories associated with the PV will be retained. delete: After a PVC is deleted, the PV and its associated subdirectories will also be deleted. NOTE: When a subdirectory is deleted, only the absolute path of the subdirectory configured in the PVC will be deleted. The upper-layer directory will not be deleted.
   storage	Yes	Requested capacity in the PVC, in Gi. This parameter is only used for verification for the PVCs of the SFS Turbo subdirectory type. The value cannot be empty or 0, and can be fixed at 10 because any value you set does not take effect.

3. Run the following command to create a PVC:

   kubectl apply -f pvc-sfsturbo-subpath.yaml